final class OneAnd[F[_], A] extends AnyRef
A generalization of NonEmptyList to non-List things. For
example, OneAnd[Vector, A] is a non-empty Vector of A.
Only head and tail are provided as direct methods, because
there's little you can do with a OneAnd without knowing a bit
about F. So useful functions are provided in the form of
typeclass instances on OneAnd's companion; in combination with
syntax extensions provided by scalaz.syntax, OneAnd has a
large possible set of methods available by importing. For
example, Applicative on this requires ApplicativePlus[F], and
Traverse1 on this requires Traverse[F]. See the companion
documentation for a complete list of instances.
Additionally, unlike λ[α => (α, F[α])], the behavior of typeclass
operations on OneAnd should be preserved across the natural
transformation to scalaz.NonEmptyList where one exists. That
is it should "be like" a nonempty structure. For example,
ap-ing two OneAnd[Vector, ?]s or NonEmptyLists of lengths
*a* and *b* yields a sequence of same type of length *a*×*b*, but
two λ[α => (α, Vector[α])]s of length *c* and *d* ap to one of
length 1+(*c*–1)×(*d*–1). For another example, point of the
former two yield a one-element sequence, but point of the latter
yields a two-element sequence.
- Source
- OneAnd.scala
- Since
7.0.3
- Alphabetic
- By Inheritance
- OneAnd
- AnyRef
- Any
- Hide All
- Show All
- Public
- All
Value Members
-
final
def
!=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
- Definition Classes
- AnyRef → Any
-
final
def
==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
asInstanceOf[T0]: T0
- Definition Classes
- Any
-
def
clone(): AnyRef
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @native() @throws( ... )
-
final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
equals(that: Any): Boolean
- Definition Classes
- OneAnd → AnyRef → Any
-
def
finalize(): Unit
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
-
final
def
getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
-
def
hashCode(): Int
- Definition Classes
- OneAnd → AnyRef → Any
- def head: A
-
final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
-
final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
- def tail: F[A]
-
def
toString(): String
- Definition Classes
- OneAnd → AnyRef → Any
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @throws( ... )